xunit web server collection

test/isnd.tests/WebServerFixture.cs

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+using System;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Hosting.Server;
+using Microsoft.AspNetCore.Hosting.Server.Features;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Xunit;
+
+namespace isnd.tests
+{
+
+    [CollectionDefinition("Web server collection")]
+
+
+    public class WebServerFixture : IDisposable
+    {
+        public IWebHost Host { get; private set;}
+        public WebServerFixture()
+        {
+            SetupHost();
+        }
+
+        public void Dispose()
+        {
+            Host.StopAsync().Wait();
+            Host.Dispose();
+        }
+
+        public void SetupHost()
+        {
+            var webhostBuilder = new WebHostBuilder()
+               .UseKestrel()
+               .UseIISIntegration()
+               .UseContentRoot("../../../../../src/isnd"
+               )
+               .UseStartup(typeof(Startup))
+               .ConfigureAppConfiguration((builderContext, config) =>
+               {
+                   config.AddJsonFile("appsettings.json", false);
+                   config.AddJsonFile("appsettings.Development.json", false);
+               });
+
+            Host = webhostBuilder.Build();
+
+            Host.Start(); //Starts listening on the configured addresses.
+            PrintAddresses(Host.Services);
+        }
+
+        void PrintAddresses(IServiceProvider services)
+        {
+            Console.WriteLine("Checking addresses...");
+            var server = services.GetRequiredService<IServer>();
+            var addressFeature = server.Features.Get<IServerAddressesFeature>();
+            foreach (var address in addressFeature.Addresses)
+            {
+                Console.WriteLine("Listing on address: " + address);
+            }
+        }
+    }
+}